[deliverable/linux.git] / drivers / staging / comedi / drivers / amplc_pc263.c

/*
    comedi/drivers/amplc_pc263.c
    Driver for Amplicon PC263 and PCI263 relay boards.

    Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/>

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 2000 David A. Schleef <ds@schleef.org>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/
/*
Driver: amplc_pc263
Description: Amplicon PC263, PCI263
Author: Ian Abbott <abbotti@mev.co.uk>
Devices: [Amplicon] PC263 (pc263), PCI263 (pci263 or amplc_pc263)
Updated: Wed, 22 Oct 2008 14:10:53 +0100
Status: works

Configuration options - PC263:
  [0] - I/O port base address

Configuration options - PCI263:
  [0] - PCI bus of device (optional)
  [1] - PCI slot of device (optional)
  If bus/slot is not specified, the first available PCI device will be
  used.

Each board appears as one subdevice, with 16 digital outputs, each
connected to a reed-relay. Relay contacts are closed when output is 1.
The state of the outputs can be read.
*/

#include "../comedidev.h"

#include "comedi_pci.h"

#define PC263_DRIVER_NAME	"amplc_pc263"

/* PCI263 PCI configuration register information */
#define PCI_VENDOR_ID_AMPLICON 0x14dc
#define PCI_DEVICE_ID_AMPLICON_PCI263 0x000c
#define PCI_DEVICE_ID_INVALID 0xffff

/* PC263 / PCI263 registers */
#define PC263_IO_SIZE	2

/*
 * Board descriptions for Amplicon PC263 / PCI263.
 */

enum pc263_bustype { isa_bustype, pci_bustype };
enum pc263_model { pc263_model, pci263_model, anypci_model };

struct pc263_board {
	const char *name;
	const char *fancy_name;
	unsigned short devid;
	enum pc263_bustype bustype;
	enum pc263_model model;
};
static const struct pc263_board pc263_boards[] = {
	{
	 .name = "pc263",
	 .fancy_name = "PC263",
	 .bustype = isa_bustype,
	 .model = pc263_model,
	 },
#ifdef CONFIG_COMEDI_PCI
	{
	 .name = "pci263",
	 .fancy_name = "PCI263",
	 .devid = PCI_DEVICE_ID_AMPLICON_PCI263,
	 .bustype = pci_bustype,
	 .model = pci263_model,
	 },
#endif
#ifdef CONFIG_COMEDI_PCI
	{
	 .name = PC263_DRIVER_NAME,
	 .fancy_name = PC263_DRIVER_NAME,
	 .devid = PCI_DEVICE_ID_INVALID,
	 .bustype = pci_bustype,
	 .model = anypci_model,	/* wildcard */
	 },
#endif
};

#ifdef CONFIG_COMEDI_PCI
static DEFINE_PCI_DEVICE_TABLE(pc263_pci_table) = {
	{
	PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI263,
		    PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
	0}
};

MODULE_DEVICE_TABLE(pci, pc263_pci_table);
#endif /* CONFIG_COMEDI_PCI */

/*
 * Useful for shorthand access to the particular board structure
 */
#define thisboard ((const struct pc263_board *)dev->board_ptr)

/* this structure is for data unique to this hardware driver.  If
   several hardware drivers keep similar information in this structure,
   feel free to suggest moving the variable to the struct comedi_device struct.
*/
#ifdef CONFIG_COMEDI_PCI
struct pc263_private {
	/* PCI device. */
	struct pci_dev *pci_dev;
};

#define devpriv ((struct pc263_private *)dev->private)
#endif /* CONFIG_COMEDI_PCI */

/*
 * The struct comedi_driver structure tells the Comedi core module
 * which functions to call to configure/deconfigure (attach/detach)
 * the board, and also about the kernel module that contains
 * the device code.
 */
static int pc263_attach(struct comedi_device *dev, struct comedi_devconfig *it);
static int pc263_detach(struct comedi_device *dev);
static struct comedi_driver driver_amplc_pc263 = {
	.driver_name = PC263_DRIVER_NAME,
	.module = THIS_MODULE,
	.attach = pc263_attach,
	.detach = pc263_detach,
	.board_name = &pc263_boards[0].name,
	.offset = sizeof(struct pc263_board),
	.num_names = ARRAY_SIZE(pc263_boards),
};

static int pc263_request_region(unsigned minor, unsigned long from,
				unsigned long extent);
static int pc263_dio_insn_bits(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct comedi_insn *insn, unsigned int *data);
static int pc263_dio_insn_config(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn, unsigned int *data);

/*
 * This function looks for a PCI device matching the requested board name,
 * bus and slot.
 */
#ifdef CONFIG_COMEDI_PCI
static int
pc263_find_pci(struct comedi_device *dev, int bus, int slot,
	       struct pci_dev **pci_dev_p)
{
	struct pci_dev *pci_dev = NULL;

	*pci_dev_p = NULL;

	/* Look for matching PCI device. */
	for (pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, NULL);
	     pci_dev != NULL;
	     pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON,
				      PCI_ANY_ID, pci_dev)) {
		/* If bus/slot specified, check them. */
		if (bus || slot) {
			if (bus != pci_dev->bus->number
			    || slot != PCI_SLOT(pci_dev->devfn))
				continue;
		}
		if (thisboard->model == anypci_model) {
			/* Match any supported model. */
			int i;

			for (i = 0; i < ARRAY_SIZE(pc263_boards); i++) {
				if (pc263_boards[i].bustype != pci_bustype)
					continue;
				if (pci_dev->device == pc263_boards[i].devid) {
					/* Change board_ptr to matched board. */
					dev->board_ptr = &pc263_boards[i];
					break;
				}
			}
			if (i == ARRAY_SIZE(pc263_boards))
				continue;
		} else {
			/* Match specific model name. */
			if (pci_dev->device != thisboard->devid)
				continue;
		}

		/* Found a match. */
		*pci_dev_p = pci_dev;
		return 0;
	}
	/* No match found. */
	if (bus || slot) {
		printk(KERN_ERR
		       "comedi%d: error! no %s found at pci %02x:%02x!\n",
		       dev->minor, thisboard->name, bus, slot);
	} else {
		printk(KERN_ERR "comedi%d: error! no %s found!\n",
		       dev->minor, thisboard->name);
	}
	return -EIO;
}
#endif

/*
 * Attach is called by the Comedi core to configure the driver
 * for a particular board.  If you specified a board_name array
 * in the driver structure, dev->board_ptr contains that
 * address.
 */
static int pc263_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
	struct comedi_subdevice *s;
	unsigned long iobase = 0;
#ifdef CONFIG_COMEDI_PCI
	struct pci_dev *pci_dev = NULL;
	int bus = 0, slot = 0;
#endif
	int ret;

	printk(KERN_DEBUG "comedi%d: %s: attach\n", dev->minor,
	       PC263_DRIVER_NAME);
/*
 * Allocate the private structure area.  alloc_private() is a
 * convenient macro defined in comedidev.h.
 */
#ifdef CONFIG_COMEDI_PCI
	ret = alloc_private(dev, sizeof(struct pc263_private));
	if (ret < 0) {
		printk(KERN_ERR "comedi%d: error! out of memory!\n",
		       dev->minor);
		return ret;
	}
#endif
	/* Process options. */
	switch (thisboard->bustype) {
	case isa_bustype:
		iobase = it->options[0];
		break;
#ifdef CONFIG_COMEDI_PCI
	case pci_bustype:
		bus = it->options[0];
		slot = it->options[1];

		ret = pc263_find_pci(dev, bus, slot, &pci_dev);
		if (ret < 0)
			return ret;
		devpriv->pci_dev = pci_dev;
		break;
#endif /* CONFIG_COMEDI_PCI */
	default:
		printk(KERN_ERR
		       "comedi%d: %s: BUG! cannot determine board type!\n",
		       dev->minor, PC263_DRIVER_NAME);
		return -EINVAL;
		break;
	}

/*
 * Initialize dev->board_name.
 */
	dev->board_name = thisboard->name;

	/* Enable device and reserve I/O spaces. */
#ifdef CONFIG_COMEDI_PCI
	if (pci_dev) {
		ret = comedi_pci_enable(pci_dev, PC263_DRIVER_NAME);
		if (ret < 0) {
			printk(KERN_ERR
			       "comedi%d: error! cannot enable PCI device and "
				"request regions!\n",
			       dev->minor);
			return ret;
		}
		iobase = pci_resource_start(pci_dev, 2);
	} else
#endif
	{
		ret = pc263_request_region(dev->minor, iobase, PC263_IO_SIZE);
		if (ret < 0)
			return ret;
	}
	dev->iobase = iobase;

/*
 * Allocate the subdevice structures.  alloc_subdevice() is a
 * convenient macro defined in comedidev.h.
 */
	ret = alloc_subdevices(dev, 1);
	if (ret < 0) {
		printk(KERN_ERR "comedi%d: error! out of memory!\n",
		       dev->minor);
		return ret;
	}

	s = dev->subdevices + 0;
	/* digital i/o subdevice */
	s->type = COMEDI_SUBD_DIO;
	s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
	s->n_chan = 16;
	s->maxdata = 1;
	s->range_table = &range_digital;
	s->insn_bits = pc263_dio_insn_bits;
	s->insn_config = pc263_dio_insn_config;
	/* all outputs */
	s->io_bits = 0xffff;
	/* read initial relay state */
	s->state = inb(dev->iobase);
	s->state = s->state | (inb(dev->iobase) << 8);

	printk(KERN_INFO "comedi%d: %s ", dev->minor, dev->board_name);
	if (thisboard->bustype == isa_bustype) {
		printk("(base %#lx) ", iobase);
	} else {
#ifdef CONFIG_COMEDI_PCI
		printk("(pci %s) ", pci_name(pci_dev));
#endif
	}

	printk("attached\n");

	return 1;
}

/*
 * _detach is called to deconfigure a device.  It should deallocate
 * resources.
 * This function is also called when _attach() fails, so it should be
 * careful not to release resources that were not necessarily
 * allocated by _attach().  dev->private and dev->subdevices are
 * deallocated automatically by the core.
 */
static int pc263_detach(struct comedi_device *dev)
{
	printk(KERN_DEBUG "comedi%d: %s: detach\n", dev->minor,
	       PC263_DRIVER_NAME);

#ifdef CONFIG_COMEDI_PCI
	if (devpriv) {
#endif
#ifdef CONFIG_COMEDI_PCI
		if (devpriv->pci_dev) {
			if (dev->iobase)
				comedi_pci_disable(devpriv->pci_dev);
			pci_dev_put(devpriv->pci_dev);
		} else
#endif
		{
			if (dev->iobase)
				release_region(dev->iobase, PC263_IO_SIZE);
		}
	}
	if (dev->board_name) {
		printk(KERN_INFO "comedi%d: %s removed\n",
		       dev->minor, dev->board_name);
	}
	return 0;
}

/*
 * This function checks and requests an I/O region, reporting an error
 * if there is a conflict.
 */
static int pc263_request_region(unsigned minor, unsigned long from,
				unsigned long extent)
{
	if (!from || !request_region(from, extent, PC263_DRIVER_NAME)) {
		printk(KERN_ERR "comedi%d: I/O port conflict (%#lx,%lu)!\n",
		       minor, from, extent);
		return -EIO;
	}
	return 0;
}

/* DIO devices are slightly special.  Although it is possible to
 * implement the insn_read/insn_write interface, it is much more
 * useful to applications if you implement the insn_bits interface.
 * This allows packed reading/writing of the DIO channels.  The
 * comedi core can convert between insn_bits and insn_read/write */
static int pc263_dio_insn_bits(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct comedi_insn *insn, unsigned int *data)
{
	if (insn->n != 2)
		return -EINVAL;

	/* The insn data is a mask in data[0] and the new data
	 * in data[1], each channel cooresponding to a bit. */
	if (data[0]) {
		s->state &= ~data[0];
		s->state |= data[0] & data[1];
		/* Write out the new digital output lines */
		outb(s->state & 0xFF, dev->iobase);
		outb(s->state >> 8, dev->iobase + 1);
	}

	/* on return, data[1] contains the value of the digital
	 * input and output lines. */
	/* or we could just return the software copy of the output values if
	 * it was a purely digital output subdevice */
	data[1] = s->state;

	return 2;
}

static int pc263_dio_insn_config(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn, unsigned int *data)
{
	if (insn->n != 1)
		return -EINVAL;
	return 1;
}

/*
 * A convenient macro that defines init_module() and cleanup_module(),
 * as necessary.
 */
#ifdef CONFIG_COMEDI_PCI
static int __devinit driver_amplc_pc263_pci_probe(struct pci_dev *dev,
						  const struct pci_device_id
						  *ent)
{
	return comedi_pci_auto_config(dev, driver_amplc_pc263.driver_name);
}

static void __devexit driver_amplc_pc263_pci_remove(struct pci_dev *dev)
{
	comedi_pci_auto_unconfig(dev);
}

static struct pci_driver driver_amplc_pc263_pci_driver = {
	.id_table = pc263_pci_table,
	.probe = &driver_amplc_pc263_pci_probe,
	.remove = __devexit_p(&driver_amplc_pc263_pci_remove)
};

static int __init driver_amplc_pc263_init_module(void)
{
	int retval;

	retval = comedi_driver_register(&driver_amplc_pc263);
	if (retval < 0)
		return retval;

	driver_amplc_pc263_pci_driver.name =
	    (char *)driver_amplc_pc263.driver_name;
	return pci_register_driver(&driver_amplc_pc263_pci_driver);
}

static void __exit driver_amplc_pc263_cleanup_module(void)
{
	pci_unregister_driver(&driver_amplc_pc263_pci_driver);
	comedi_driver_unregister(&driver_amplc_pc263);
}

module_init(driver_amplc_pc263_init_module);
module_exit(driver_amplc_pc263_cleanup_module);
#else
static int __init driver_amplc_pc263_init_module(void)
{
	return comedi_driver_register(&driver_amplc_pc263);
}

static void __exit driver_amplc_pc263_cleanup_module(void)
{
	comedi_driver_unregister(&driver_amplc_pc263);
}

module_init(driver_amplc_pc263_init_module);
module_exit(driver_amplc_pc263_cleanup_module);
#endif

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
cfd02b71 IA	1	/*
	2	comedi/drivers/amplc_pc263.c
	3	Driver for Amplicon PC263 and PCI263 relay boards.
	4
	5	Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/>
	6
	7	COMEDI - Linux Control and Measurement Device Interface
	8	Copyright (C) 2000 David A. Schleef <ds@schleef.org>
	9
	10	This program is free software; you can redistribute it and/or modify
	11	it under the terms of the GNU General Public License as published by
	12	the Free Software Foundation; either version 2 of the License, or
	13	(at your option) any later version.
	14
	15	This program is distributed in the hope that it will be useful,
	16	but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	GNU General Public License for more details.
	19
	20	You should have received a copy of the GNU General Public License
	21	along with this program; if not, write to the Free Software
	22	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	23
	24	*/
	25	/*
	26	Driver: amplc_pc263
	27	Description: Amplicon PC263, PCI263
	28	Author: Ian Abbott <abbotti@mev.co.uk>
	29	Devices: [Amplicon] PC263 (pc263), PCI263 (pci263 or amplc_pc263)
	30	Updated: Wed, 22 Oct 2008 14:10:53 +0100
	31	Status: works
	32
	33	Configuration options - PC263:
	34	[0] - I/O port base address
	35
	36	Configuration options - PCI263:
	37	[0] - PCI bus of device (optional)
	38	[1] - PCI slot of device (optional)
	39	If bus/slot is not specified, the first available PCI device will be
	40	used.
	41
	42	Each board appears as one subdevice, with 16 digital outputs, each
	43	connected to a reed-relay. Relay contacts are closed when output is 1.
	44	The state of the outputs can be read.
	45	*/
	46
	47	#include "../comedidev.h"
	48
	49	#include "comedi_pci.h"
	50
	51	#define PC263_DRIVER_NAME "amplc_pc263"
	52
	53	/* PCI263 PCI configuration register information */
	54	#define PCI_VENDOR_ID_AMPLICON 0x14dc
	55	#define PCI_DEVICE_ID_AMPLICON_PCI263 0x000c
	56	#define PCI_DEVICE_ID_INVALID 0xffff
	57
	58	/* PC263 / PCI263 registers */
	59	#define PC263_IO_SIZE 2
	60
	61	/*
	62	* Board descriptions for Amplicon PC263 / PCI263.
	63	*/
	64
65	enum pc263_bustype { isa_bustype, pci_bustype };
66	enum pc263_model { pc263_model, pci263_model, anypci_model };
67
4beb86c2	68	struct pc263_board {
cfd02b71 IA	69	const char *name;
	70	const char *fancy_name;
	71	unsigned short devid;
	72	enum pc263_bustype bustype;
	73	enum pc263_model model;
4beb86c2 BP	74	};
4beb86c2 BP	75	static const struct pc263_board pc263_boards[] = {
cfd02b71	76	{
0a85b6f0 MT	77	.name = "pc263",
	78	.fancy_name = "PC263",
	79	.bustype = isa_bustype,
	80	.model = pc263_model,
	81	},
cfd02b71 IA	82	#ifdef CONFIG_COMEDI_PCI
cfd02b71 IA	83	{
0a85b6f0 MT	84	.name = "pci263",
	85	.fancy_name = "PCI263",
	86	.devid = PCI_DEVICE_ID_AMPLICON_PCI263,
	87	.bustype = pci_bustype,
	88	.model = pci263_model,
	89	},
cfd02b71 IA	90	#endif
	91	#ifdef CONFIG_COMEDI_PCI
	92	{
0a85b6f0 MT	93	.name = PC263_DRIVER_NAME,
	94	.fancy_name = PC263_DRIVER_NAME,
	95	.devid = PCI_DEVICE_ID_INVALID,
	96	.bustype = pci_bustype,
	97	.model = anypci_model, /* wildcard */
	98	},
cfd02b71 IA	99	#endif
	100	};
	101
	102	#ifdef CONFIG_COMEDI_PCI
	103	static DEFINE_PCI_DEVICE_TABLE(pc263_pci_table) = {
0a85b6f0 MT	104	{
	105	PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI263,
	106	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
	107	0}
cfd02b71 IA	108	};
	109
	110	MODULE_DEVICE_TABLE(pci, pc263_pci_table);
	111	#endif /* CONFIG_COMEDI_PCI */
	112
	113	/*
	114	* Useful for shorthand access to the particular board structure
	115	*/
4beb86c2	116	#define thisboard ((const struct pc263_board *)dev->board_ptr)
cfd02b71 IA	117
	118	/* this structure is for data unique to this hardware driver. If
	119	several hardware drivers keep similar information in this structure,
abdedefe KAP	120	feel free to suggest moving the variable to the struct comedi_device struct.
abdedefe KAP	121	*/
cfd02b71	122	#ifdef CONFIG_COMEDI_PCI
cd60d1ec	123	struct pc263_private {
cfd02b71 IA	124	/* PCI device. */
cfd02b71 IA	125	struct pci_dev *pci_dev;
cd60d1ec	126	};
cfd02b71	127
cd60d1ec	128	#define devpriv ((struct pc263_private *)dev->private)
cfd02b71 IA	129	#endif /* CONFIG_COMEDI_PCI */
	130
	131	/*
139dfbdf	132	* The struct comedi_driver structure tells the Comedi core module
cfd02b71 IA	133	* which functions to call to configure/deconfigure (attach/detach)
	134	* the board, and also about the kernel module that contains
	135	* the device code.
	136	*/
da91b269 BP	137	static int pc263_attach(struct comedi_device dev, struct comedi_devconfig it);
da91b269 BP	138	static int pc263_detach(struct comedi_device *dev);
139dfbdf	139	static struct comedi_driver driver_amplc_pc263 = {
68c3dbff BP	140	.driver_name = PC263_DRIVER_NAME,
	141	.module = THIS_MODULE,
	142	.attach = pc263_attach,
	143	.detach = pc263_detach,
	144	.board_name = &pc263_boards[0].name,
	145	.offset = sizeof(struct pc263_board),
8629efa4	146	.num_names = ARRAY_SIZE(pc263_boards),
cfd02b71 IA	147	};
	148
	149	static int pc263_request_region(unsigned minor, unsigned long from,
0a85b6f0 MT	150	unsigned long extent);
	151	static int pc263_dio_insn_bits(struct comedi_device *dev,
	152	struct comedi_subdevice *s,
	153	struct comedi_insn insn, unsigned int data);
	154	static int pc263_dio_insn_config(struct comedi_device *dev,
	155	struct comedi_subdevice *s,
	156	struct comedi_insn insn, unsigned int data);
cfd02b71 IA	157
	158	/*
	159	* This function looks for a PCI device matching the requested board name,
	160	* bus and slot.
	161	*/
	162	#ifdef CONFIG_COMEDI_PCI
	163	static int
da91b269	164	pc263_find_pci(struct comedi_device *dev, int bus, int slot,
0a85b6f0	165	struct pci_dev **pci_dev_p)
cfd02b71 IA	166	{
	167	struct pci_dev *pci_dev = NULL;
	168
	169	*pci_dev_p = NULL;
	170
	171	/* Look for matching PCI device. */
	172	for (pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, NULL);
0a85b6f0 MT	173	pci_dev != NULL;
	174	pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON,
	175	PCI_ANY_ID, pci_dev)) {
cfd02b71 IA	176	/* If bus/slot specified, check them. */
	177	if (bus \|\| slot) {
	178	if (bus != pci_dev->bus->number
0a85b6f0	179	\|\| slot != PCI_SLOT(pci_dev->devfn))
cfd02b71 IA	180	continue;
	181	}
	182	if (thisboard->model == anypci_model) {
	183	/* Match any supported model. */
	184	int i;
	185
	186	for (i = 0; i < ARRAY_SIZE(pc263_boards); i++) {
	187	if (pc263_boards[i].bustype != pci_bustype)
	188	continue;
	189	if (pci_dev->device == pc263_boards[i].devid) {
	190	/* Change board_ptr to matched board. */
	191	dev->board_ptr = &pc263_boards[i];
	192	break;
	193	}
	194	}
	195	if (i == ARRAY_SIZE(pc263_boards))
	196	continue;
	197	} else {
	198	/* Match specific model name. */
	199	if (pci_dev->device != thisboard->devid)
	200	continue;
	201	}
	202
	203	/* Found a match. */
	204	*pci_dev_p = pci_dev;
	205	return 0;
	206	}
	207	/* No match found. */
	208	if (bus \|\| slot) {
	209	printk(KERN_ERR
0a85b6f0 MT	210	"comedi%d: error! no %s found at pci %02x:%02x!\n",
0a85b6f0 MT	211	dev->minor, thisboard->name, bus, slot);
cfd02b71 IA	212	} else {
cfd02b71 IA	213	printk(KERN_ERR "comedi%d: error! no %s found!\n",
0a85b6f0	214	dev->minor, thisboard->name);
cfd02b71 IA	215	}
	216	return -EIO;
	217	}
	218	#endif
	219
	220	/*
	221	* Attach is called by the Comedi core to configure the driver
	222	* for a particular board. If you specified a board_name array
	223	* in the driver structure, dev->board_ptr contains that
	224	* address.
	225	*/
da91b269	226	static int pc263_attach(struct comedi_device dev, struct comedi_devconfig it)
cfd02b71	227	{
34c43922	228	struct comedi_subdevice *s;
cfd02b71 IA	229	unsigned long iobase = 0;
	230	#ifdef CONFIG_COMEDI_PCI
	231	struct pci_dev *pci_dev = NULL;
	232	int bus = 0, slot = 0;
	233	#endif
	234	int ret;
	235
	236	printk(KERN_DEBUG "comedi%d: %s: attach\n", dev->minor,
0a85b6f0	237	PC263_DRIVER_NAME);
cfd02b71 IA	238	/*
	239	* Allocate the private structure area. alloc_private() is a
	240	* convenient macro defined in comedidev.h.
	241	*/
	242	#ifdef CONFIG_COMEDI_PCI
c3744138 BP	243	ret = alloc_private(dev, sizeof(struct pc263_private));
c3744138 BP	244	if (ret < 0) {
cfd02b71	245	printk(KERN_ERR "comedi%d: error! out of memory!\n",
0a85b6f0	246	dev->minor);
cfd02b71 IA	247	return ret;
	248	}
	249	#endif
	250	/* Process options. */
	251	switch (thisboard->bustype) {
	252	case isa_bustype:
	253	iobase = it->options[0];
	254	break;
	255	#ifdef CONFIG_COMEDI_PCI
	256	case pci_bustype:
	257	bus = it->options[0];
	258	slot = it->options[1];
	259
c3744138 BP	260	ret = pc263_find_pci(dev, bus, slot, &pci_dev);
c3744138 BP	261	if (ret < 0)
cfd02b71 IA	262	return ret;
	263	devpriv->pci_dev = pci_dev;
	264	break;
	265	#endif /* CONFIG_COMEDI_PCI */
	266	default:
	267	printk(KERN_ERR
0a85b6f0 MT	268	"comedi%d: %s: BUG! cannot determine board type!\n",
0a85b6f0 MT	269	dev->minor, PC263_DRIVER_NAME);
cfd02b71 IA	270	return -EINVAL;
	271	break;
	272	}
	273
	274	/*
	275	* Initialize dev->board_name.
	276	*/
	277	dev->board_name = thisboard->name;
	278
	279	/* Enable device and reserve I/O spaces. */
	280	#ifdef CONFIG_COMEDI_PCI
	281	if (pci_dev) {
c3744138 BP	282	ret = comedi_pci_enable(pci_dev, PC263_DRIVER_NAME);
c3744138 BP	283	if (ret < 0) {
cfd02b71	284	printk(KERN_ERR
abdedefe KAP	285	"comedi%d: error! cannot enable PCI device and "
abdedefe KAP	286	"request regions!\n",
0a85b6f0	287	dev->minor);
cfd02b71 IA	288	return ret;
	289	}
	290	iobase = pci_resource_start(pci_dev, 2);
	291	} else
	292	#endif
	293	{
	294	ret = pc263_request_region(dev->minor, iobase, PC263_IO_SIZE);
56f5f24d	295	if (ret < 0)
cfd02b71	296	return ret;
cfd02b71 IA	297	}
	298	dev->iobase = iobase;
	299
	300	/*
	301	* Allocate the subdevice structures. alloc_subdevice() is a
	302	* convenient macro defined in comedidev.h.
	303	*/
c3744138 BP	304	ret = alloc_subdevices(dev, 1);
c3744138 BP	305	if (ret < 0) {
cfd02b71	306	printk(KERN_ERR "comedi%d: error! out of memory!\n",
0a85b6f0	307	dev->minor);
cfd02b71 IA	308	return ret;
	309	}
	310
	311	s = dev->subdevices + 0;
	312	/* digital i/o subdevice */
	313	s->type = COMEDI_SUBD_DIO;
fcea1154	314	s->subdev_flags = SDF_READABLE \| SDF_WRITABLE;
cfd02b71 IA	315	s->n_chan = 16;
	316	s->maxdata = 1;
	317	s->range_table = &range_digital;
	318	s->insn_bits = pc263_dio_insn_bits;
	319	s->insn_config = pc263_dio_insn_config;
	320	/* all outputs */
	321	s->io_bits = 0xffff;
	322	/* read initial relay state */
	323	s->state = inb(dev->iobase);
	324	s->state = s->state \| (inb(dev->iobase) << 8);
	325
	326	printk(KERN_INFO "comedi%d: %s ", dev->minor, dev->board_name);
	327	if (thisboard->bustype == isa_bustype) {
	328	printk("(base %#lx) ", iobase);
	329	} else {
	330	#ifdef CONFIG_COMEDI_PCI
	331	printk("(pci %s) ", pci_name(pci_dev));
	332	#endif
	333	}
	334
	335	printk("attached\n");
	336
	337	return 1;
	338	}
	339
	340	/*
	341	* _detach is called to deconfigure a device. It should deallocate
	342	* resources.
	343	* This function is also called when _attach() fails, so it should be
	344	* careful not to release resources that were not necessarily
	345	* allocated by _attach(). dev->private and dev->subdevices are
	346	* deallocated automatically by the core.
	347	*/
da91b269	348	static int pc263_detach(struct comedi_device *dev)
cfd02b71 IA	349	{
cfd02b71 IA	350	printk(KERN_DEBUG "comedi%d: %s: detach\n", dev->minor,
0a85b6f0	351	PC263_DRIVER_NAME);
cfd02b71 IA	352
cfd02b71 IA	353	#ifdef CONFIG_COMEDI_PCI
56f5f24d	354	if (devpriv) {
cfd02b71	355	#endif
cfd02b71 IA	356	#ifdef CONFIG_COMEDI_PCI
cfd02b71 IA	357	if (devpriv->pci_dev) {
56f5f24d	358	if (dev->iobase)
cfd02b71	359	comedi_pci_disable(devpriv->pci_dev);
cfd02b71 IA	360	pci_dev_put(devpriv->pci_dev);
	361	} else
	362	#endif
	363	{
56f5f24d	364	if (dev->iobase)
cfd02b71	365	release_region(dev->iobase, PC263_IO_SIZE);
cfd02b71 IA	366	}
	367	}
	368	if (dev->board_name) {
	369	printk(KERN_INFO "comedi%d: %s removed\n",
0a85b6f0	370	dev->minor, dev->board_name);
cfd02b71 IA	371	}
	372	return 0;
	373	}
	374
	375	/*
	376	* This function checks and requests an I/O region, reporting an error
	377	* if there is a conflict.
	378	*/
	379	static int pc263_request_region(unsigned minor, unsigned long from,
0a85b6f0	380	unsigned long extent)
cfd02b71 IA	381	{
	382	if (!from \|\| !request_region(from, extent, PC263_DRIVER_NAME)) {
	383	printk(KERN_ERR "comedi%d: I/O port conflict (%#lx,%lu)!\n",
0a85b6f0	384	minor, from, extent);
cfd02b71 IA	385	return -EIO;
	386	}
	387	return 0;
	388	}
	389
	390	/* DIO devices are slightly special. Although it is possible to
	391	* implement the insn_read/insn_write interface, it is much more
	392	* useful to applications if you implement the insn_bits interface.
	393	* This allows packed reading/writing of the DIO channels. The
	394	* comedi core can convert between insn_bits and insn_read/write */
0a85b6f0 MT	395	static int pc263_dio_insn_bits(struct comedi_device *dev,
	396	struct comedi_subdevice *s,
	397	struct comedi_insn insn, unsigned int data)
cfd02b71 IA	398	{
	399	if (insn->n != 2)
	400	return -EINVAL;
	401
	402	/* The insn data is a mask in data[0] and the new data
	403	* in data[1], each channel cooresponding to a bit. */
	404	if (data[0]) {
	405	s->state &= ~data[0];
	406	s->state \|= data[0] & data[1];
	407	/* Write out the new digital output lines */
	408	outb(s->state & 0xFF, dev->iobase);
	409	outb(s->state >> 8, dev->iobase + 1);
	410	}
	411
	412	/* on return, data[1] contains the value of the digital
	413	* input and output lines. */
	414	/* or we could just return the software copy of the output values if
	415	* it was a purely digital output subdevice */
	416	data[1] = s->state;
	417
	418	return 2;
	419	}
	420
0a85b6f0 MT	421	static int pc263_dio_insn_config(struct comedi_device *dev,
	422	struct comedi_subdevice *s,
	423	struct comedi_insn insn, unsigned int data)
cfd02b71 IA	424	{
	425	if (insn->n != 1)
	426	return -EINVAL;
	427	return 1;
	428	}
	429
	430	/*
	431	* A convenient macro that defines init_module() and cleanup_module(),
	432	* as necessary.
	433	*/
	434	#ifdef CONFIG_COMEDI_PCI
727b286b AT	435	static int __devinit driver_amplc_pc263_pci_probe(struct pci_dev *dev,
	436	const struct pci_device_id
	437	*ent)
	438	{
	439	return comedi_pci_auto_config(dev, driver_amplc_pc263.driver_name);
	440	}
	441
	442	static void __devexit driver_amplc_pc263_pci_remove(struct pci_dev *dev)
	443	{
	444	comedi_pci_auto_unconfig(dev);
	445	}
	446
	447	static struct pci_driver driver_amplc_pc263_pci_driver = {
	448	.id_table = pc263_pci_table,
	449	.probe = &driver_amplc_pc263_pci_probe,
	450	.remove = __devexit_p(&driver_amplc_pc263_pci_remove)
	451	};
	452
	453	static int __init driver_amplc_pc263_init_module(void)
	454	{
	455	int retval;
	456
	457	retval = comedi_driver_register(&driver_amplc_pc263);
	458	if (retval < 0)
	459	return retval;
	460
	461	driver_amplc_pc263_pci_driver.name =
	462	(char *)driver_amplc_pc263.driver_name;
	463	return pci_register_driver(&driver_amplc_pc263_pci_driver);
	464	}
	465
	466	static void __exit driver_amplc_pc263_cleanup_module(void)
	467	{
	468	pci_unregister_driver(&driver_amplc_pc263_pci_driver);
	469	comedi_driver_unregister(&driver_amplc_pc263);
	470	}
	471
	472	module_init(driver_amplc_pc263_init_module);
	473	module_exit(driver_amplc_pc263_cleanup_module);
cfd02b71	474	#else
7114a280 AT	475	static int __init driver_amplc_pc263_init_module(void)
	476	{
	477	return comedi_driver_register(&driver_amplc_pc263);
	478	}
	479
	480	static void __exit driver_amplc_pc263_cleanup_module(void)
	481	{
	482	comedi_driver_unregister(&driver_amplc_pc263);
	483	}
	484
	485	module_init(driver_amplc_pc263_init_module);
	486	module_exit(driver_amplc_pc263_cleanup_module);
cfd02b71	487	#endif
90f703d3 AT	488
	489	MODULE_AUTHOR("Comedi http://www.comedi.org");
	490	MODULE_DESCRIPTION("Comedi low-level driver");
	491	MODULE_LICENSE("GPL");